140989001 has 2 divisors, whose sum is σ = 140989002. Its totient is φ = 140989000.

The previous prime is 140988977. The next prime is 140989033. The reversal of 140989001 is 100989041.

It is an a-pointer prime, because the next prime (140989033) can be obtained adding 140989001 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138180025 + 2808976 = 11755^2 + 1676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140989001 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (140989081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70494500 + 70494501.

It is an arithmetic number, because the mean of its divisors is an integer number (70494501).

Almost surely, 2^140989001 is an apocalyptic number.

It is an amenable number.

140989001 is a deficient number, since it is larger than the sum of its proper divisors (1).

140989001 is an equidigital number, since it uses as much as digits as its factorization.

140989001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 140989001 is about 11873.8789365565. The cubic root of 140989001 is about 520.4692522046.

The spelling of 140989001 in words is "one hundred forty million, nine hundred eighty-nine thousand, one".